Combining ovarian tissue freezing with egg (oocyte) freezing versus egg freezing alone
Official title: Ovarian Tissue Cryopreservation Combined With Oocyte Cryopreservation Versus Oocyte Cryopreservation Alone: an Observational Study in Oncology Patients
Run by IRCCS Azienda Ospedaliero-Universitaria di Bologna · NCT07546123 · Data updated 2026-11-12
This research will test whether combining ovarian tissue freezing with egg freezing helps adult women with cancer preserve more fertility than egg freezing alone.
Quick facts
| Study type | Observational |
|---|---|
| Ages | 18 Years to 46 Years |
| Sex | Women only |
| Enrollment | 127 (estimated) |
| Sponsor | IRCCS Azienda Ospedaliero-Universitaria di Bologna Academic / other |
| Drugs / interventions | chemotherapy |
| Locations | 1 site (Bologna, Bologna) |
| Status | Recruiting |
| Started | August 25, 2025 |
| Main results expected | July 2029 |
| Study ends | September 2029 |
| Registry record updated | April 22, 2026 |
| Trial ID | NCT07546123 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adults aged 18–46 with an oncological diagnosis who are planning potentially gonadotoxic therapy, have BMI of 17.5–32, and have oncological clearance are ideal candidates.
✕Probably not a fit
Patients outside the age or BMI limits, those with active HBV/HCV/HIV or syphilis, those without oncological clearance, or those unable to undergo ovarian stimulation or surgery may not receive benefit.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This observational project will collect clinical data from two groups of adult oncology patients facing potentially gonadotoxic treatment: those who undergo ovarian tissue cryopreservation followed by oocyte cryopreservation, and those who undergo oocyte cryopreservation alone. Investigators will compare outcomes such as number of preserved follicles, number of mature oocytes retrieved, timing relative to cancer therapy, and recovery of ovarian endocrine function. Eligible participants are women aged 18–46 with BMI between 17.5 and 32 and oncological clearance, while patients positive for HBV, HCV, HIV, or Treponema pallidum or with hypersensitivity to stimulation drugs are excluded. The study is single-center and will use routine clinical and laboratory records at the treating hospital to characterize real-world differences between the approaches.
Why it matters
Potential benefit: If successful, the combined approach could preserve more follicles and mature eggs, increasing the chances of future pregnancy and helping restore ovarian hormonal function.
How similar studies have gone: Oocyte cryopreservation is well-established and ovarian tissue cryopreservation has led to restored ovarian function and live births in prior reports, but combining both approaches has limited published data.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Patient with oncological disease eligible for potentially gonadotoxic therapy * BMI ≥ 17.5 kg/m² and ≤ 32 kg/m² * Age ≥ 18 years and ≤ 46 years Exclusion Criteria: * Hypersensitivity to one or more of the active substances used during ovarian stimulation treatment * Positive for HBV, HCV, HIV, or Treponema pallidum * Lack of oncological clearance
Where it's running
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IRCCS Azienda Ospedaliero-Universitaria di Bologna
Bologna, Bologna, Italy Recruiting
Study contacts
- Study coordinator: Diego Raimondo, MD
- Email: die.raimondo@gmail.com
- Phone: +393290636618
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
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GnRH agonist versus dual hCG/GnRH trigger for ovulation induction in fertility preservation
We will test whether using a GnRH agonist alone or a dual trigger (GnRH agonist plus hCG) gives better egg retrieval numbers and safety for people with cancer doing egg freezing before gonadotoxic treatment.
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Follicular Flushing During Abdominal Egg Retrieval in Women with Low Egg Reserve
This study tests whether rinsing the egg sacs during abdominal egg collection yields more eggs and more mature eggs for freezing in women with low ovarian reserve.
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Long-term follow-up of fertility preservation in women after cancer remission
This project will see how fertility preservation options work long-term for women in remission from cancer or hematological disease, including how often preserved material is used and the psychological effects.
-
When to start hormones after stopping combined birth control for planned egg freezing
This trial tests whether taking a two-month break from combined hormonal birth control versus starting ovarian stimulation immediately affects outcomes for ovary-bearing people aged 18–40 who are planning to freeze their eggs.
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Fertility-preserving hysteroscopic treatment outcomes for endometrial cancer and atypical hyperplasia
This project tests whether removing lesions by hysteroscopy combined with hormonal therapy helps women with endometrial cancer or atypical hyperplasia preserve fertility and achieve good pregnancy and cancer-control outcomes.
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Intranasal Nafarelin to Trigger Final Egg M maturation in Fertility Preservation
This trial tests whether intranasal nafarelin can trigger final oocyte maturation as effectively as subcutaneous triptorelin for women freezing oocytes for fertility preservation.
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.